341 lines
13 KiB
C++
341 lines
13 KiB
C++
#include <Components/Ble/BleController.h>
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#include <SystemTask/SystemTask.h>
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#include <cstring>
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#include "DfuService.h"
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using namespace Pinetime::Controllers;
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constexpr ble_uuid128_t DfuService::serviceUuid;
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constexpr ble_uuid128_t DfuService::controlPointCharacteristicUuid;
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constexpr ble_uuid128_t DfuService::revisionCharacteristicUuid;
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constexpr ble_uuid128_t DfuService::packetCharacteristicUuid;
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int DfuServiceCallback(uint16_t conn_handle, uint16_t attr_handle,
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struct ble_gatt_access_ctxt *ctxt, void *arg) {
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auto dfuService = static_cast<DfuService*>(arg);
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return dfuService->OnServiceData(conn_handle, attr_handle, ctxt);
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}
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DfuService::DfuService(Pinetime::System::SystemTask& systemTask, Pinetime::Controllers::Ble& bleController, Pinetime::Drivers::SpiNorFlash& spiNorFlash) :
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systemTask{systemTask},
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bleController{bleController},
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spiNorFlash{spiNorFlash},
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characteristicDefinition{
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{
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.uuid = (ble_uuid_t *) &packetCharacteristicUuid,
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.access_cb = DfuServiceCallback,
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.arg = this,
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.flags = BLE_GATT_CHR_F_WRITE_NO_RSP,
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.val_handle = nullptr,
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},
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{
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.uuid = (ble_uuid_t *) &controlPointCharacteristicUuid,
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.access_cb = DfuServiceCallback,
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.arg = this,
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.flags = BLE_GATT_CHR_F_WRITE | BLE_GATT_CHR_F_NOTIFY,
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.val_handle = nullptr,
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},
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{
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.uuid = (ble_uuid_t *) &revisionCharacteristicUuid,
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.access_cb = DfuServiceCallback,
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.arg = this,
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.flags = BLE_GATT_CHR_F_READ,
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.val_handle = &revision,
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},
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{
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0
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}
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},
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serviceDefinition {
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{
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/* Device Information Service */
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.type = BLE_GATT_SVC_TYPE_PRIMARY,
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.uuid = (ble_uuid_t *) &serviceUuid,
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.characteristics = characteristicDefinition
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},
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{
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0
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},
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}
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{
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}
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void DfuService::Init() {
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ble_gatts_count_cfg(serviceDefinition);
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ble_gatts_add_svcs(serviceDefinition);
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}
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int DfuService::OnServiceData(uint16_t connectionHandle, uint16_t attributeHandle, ble_gatt_access_ctxt *context) {
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ble_gatts_find_chr((ble_uuid_t*)&serviceUuid, (ble_uuid_t*)&packetCharacteristicUuid, nullptr, &packetCharacteristicHandle);
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ble_gatts_find_chr((ble_uuid_t*)&serviceUuid, (ble_uuid_t*)&controlPointCharacteristicUuid, nullptr, &controlPointCharacteristicHandle);
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ble_gatts_find_chr((ble_uuid_t*)&serviceUuid, (ble_uuid_t*)&revisionCharacteristicUuid, nullptr, &revisionCharacteristicHandle);
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if(attributeHandle == packetCharacteristicHandle) {
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if(context->op == BLE_GATT_ACCESS_OP_WRITE_CHR)
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return WritePacketHandler(connectionHandle, context->om);
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else return 0;
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} else if(attributeHandle == controlPointCharacteristicHandle) {
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if(context->op == BLE_GATT_ACCESS_OP_WRITE_CHR)
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return ControlPointHandler(connectionHandle, context->om);
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else return 0;
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} else if(attributeHandle == revisionCharacteristicHandle) {
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if(context->op == BLE_GATT_ACCESS_OP_READ_CHR)
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return SendDfuRevision(context->om);
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else return 0;
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} else {
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NRF_LOG_INFO("[DFU] Unknown Characteristic : %d", attributeHandle);
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return 0;
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}
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}
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int DfuService::SendDfuRevision(os_mbuf *om) const {
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int res = os_mbuf_append(om, &revision, sizeof(revision));
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return (res == 0) ? 0 : BLE_ATT_ERR_INSUFFICIENT_RES;
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}
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int DfuService::WritePacketHandler(uint16_t connectionHandle, os_mbuf *om) {
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switch(state) {
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case States::Start: {
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softdeviceSize = om->om_data[0] + (om->om_data[1] << 8) + (om->om_data[2] << 16) + (om->om_data[3] << 24);
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bootloaderSize = om->om_data[4] + (om->om_data[5] << 8) + (om->om_data[6] << 16) + (om->om_data[7] << 24);
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applicationSize = om->om_data[8] + (om->om_data[9] << 8) + (om->om_data[10] << 16) + (om->om_data[11] << 24);
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bleController.FirmwareUpdateTotalBytes(applicationSize);
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NRF_LOG_INFO("[DFU] -> Start data received : SD size : %d, BT size : %d, app size : %d", softdeviceSize, bootloaderSize, applicationSize);
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for(int erased = 0; erased < maxImageSize; erased += 0x1000) {
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#if 1
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spiNorFlash.SectorErase(writeOffset + erased);
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auto p = spiNorFlash.ProgramFailed();
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auto e = spiNorFlash.EraseFailed();
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NRF_LOG_INFO("[DFU] Erasing sector %d - %d-%d", erased, p, e);
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#endif
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}
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uint8_t data[] {16, 1, 1};
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SendNotification(connectionHandle, data, 3);
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state = States::Init;
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}
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return 0;
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case States::Init: {
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uint16_t deviceType = om->om_data[0] + (om->om_data[1] << 8);
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uint16_t deviceRevision = om->om_data[2] + (om->om_data[3] << 8);
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uint32_t applicationVersion = om->om_data[4] + (om->om_data[5] << 8) + (om->om_data[6] << 16) + (om->om_data[7] << 24);
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uint16_t softdeviceArrayLength = om->om_data[8] + (om->om_data[9] << 8);
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uint16_t sd[softdeviceArrayLength];
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for(int i = 0; i < softdeviceArrayLength; i++) {
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sd[i] = om->om_data[10 + (i*2)] + (om->om_data[(i*2)+1] << 8);
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}
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uint16_t crc = om->om_data[10 + (softdeviceArrayLength*2)] + (om->om_data[10 + (softdeviceArrayLength*2)] << 8);
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NRF_LOG_INFO("[DFU] -> Init data received : deviceType = %d, deviceRevision = %d, applicationVersion = %d, nb SD = %d, First SD = %d, CRC = %u",
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deviceType, deviceRevision, applicationVersion, softdeviceArrayLength, sd[0], crc);
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return 0;
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}
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case States::Data: {
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nbPacketReceived++;
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auto offset = ((nbPacketReceived-1) % nbPacketsToNotify)*20;
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std::memcpy(tempBuffer + offset, om->om_data, om->om_len);
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if(firstCrc) {
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tempCrc = ComputeCrc(om->om_data, om->om_len, NULL);
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firstCrc = false;
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}
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else
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tempCrc = ComputeCrc(om->om_data, om->om_len, &tempCrc);
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if(nbPacketReceived > 0 && (nbPacketReceived % nbPacketsToNotify) == 0) {
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#if 1
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spiNorFlash.Write(writeOffset + ((nbPacketReceived-nbPacketsToNotify)*20), tempBuffer, 200);
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#endif
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}
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bytesReceived += om->om_len;
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bleController.FirmwareUpdateCurrentBytes(bytesReceived);
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//NRF_LOG_INFO("[DFU] -> Bytes received : %d in %d packets", bytesReceived, nbPacketReceived);
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if((nbPacketReceived % nbPacketsToNotify) == 0) {
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uint8_t data[5]{static_cast<uint8_t>(Opcodes::PacketReceiptNotification),
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(uint8_t)(bytesReceived&0x000000FFu),(uint8_t)(bytesReceived>>8u), (uint8_t)(bytesReceived>>16u),(uint8_t)(bytesReceived>>24u) };
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NRF_LOG_INFO("[DFU] -> Send packet notification: %d bytes received",bytesReceived);
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SendNotification(connectionHandle, data, 5);
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}
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if(bytesReceived == applicationSize) {
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if((nbPacketReceived % nbPacketsToNotify) != 0) {
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auto remaningPacket = nbPacketReceived % nbPacketsToNotify;
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uint32_t spiOffset = writeOffset + ((nbPacketReceived-remaningPacket)*20);
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spiNorFlash.Write(writeOffset + ((nbPacketReceived-remaningPacket)*20), tempBuffer, remaningPacket * 20);
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}
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if(applicationSize < maxImageSize) {
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WriteMagicNumber();
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}
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uint8_t data[3]{static_cast<uint8_t>(Opcodes::Response),
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static_cast<uint8_t>(Opcodes::ReceiveFirmwareImage),
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static_cast<uint8_t>(ErrorCodes::NoError)};
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NRF_LOG_INFO("[DFU] -> Send packet notification : all bytes received! CRC = %u", tempCrc);
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SendNotification(connectionHandle, data, 3);
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state = States::Validate;
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Validate();
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}
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}
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return 0;
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default:
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// Invalid state
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return 0;
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}
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return 0;
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}
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int DfuService::ControlPointHandler(uint16_t connectionHandle, os_mbuf *om) {
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auto opcode = static_cast<Opcodes>(om->om_data[0]);
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NRF_LOG_INFO("[DFU] -> ControlPointHandler");
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switch(opcode) {
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case Opcodes::StartDFU: {
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if(state != States::Idle && state != States::Start) {
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NRF_LOG_INFO("[DFU] -> Start DFU requested, but we are not in Idle state");
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return 0;
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}
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if(state == States::Start) {
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NRF_LOG_INFO("[DFU] -> Start DFU requested, but we are already in Start state");
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return 0;
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}
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auto imageType = static_cast<ImageTypes>(om->om_data[1]);
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if(imageType == ImageTypes::Application) {
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NRF_LOG_INFO("[DFU] -> Start DFU, mode = Application");
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state = States::Start;
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bleController.StartFirmwareUpdate();
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bleController.FirmwareUpdateTotalBytes(0xffffffffu);
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bleController.FirmwareUpdateCurrentBytes(0);
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systemTask.PushMessage(Pinetime::System::SystemTask::Messages::BleFirmwareUpdateStarted);
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return 0;
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} else {
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NRF_LOG_INFO("[DFU] -> Start DFU, mode %d not supported!", imageType);
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return 0;
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}
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}
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break;
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case Opcodes::InitDFUParameters: {
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if (state != States::Init) {
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NRF_LOG_INFO("[DFU] -> Init DFU requested, but we are not in Init state");
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return 0;
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}
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bool isInitComplete = (om->om_data[1] != 0);
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NRF_LOG_INFO("[DFU] -> Init DFU parameters %s", isInitComplete ? " complete" : " not complete");
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if (isInitComplete) {
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uint8_t data[3]{static_cast<uint8_t>(Opcodes::Response),
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static_cast<uint8_t>(Opcodes::InitDFUParameters),
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(isInitComplete ? uint8_t{1} : uint8_t{0})};
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NRF_LOG_INFO("SEND NOTIF : %d %d %d", data[0], data[1], data[2]);
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SendNotification(connectionHandle, data, 3);
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return 0;
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}
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}
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return 0;
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case Opcodes::PacketReceiptNotificationRequest:
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nbPacketsToNotify = om->om_data[1];
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NRF_LOG_INFO("[DFU] -> Receive Packet Notification Request, nb packet = %d", nbPacketsToNotify);
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return 0;
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case Opcodes::ReceiveFirmwareImage:
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if(state != States::Init) {
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NRF_LOG_INFO("[DFU] -> Receive firmware image requested, but we are not in Start Init");
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return 0;
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}
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NRF_LOG_INFO("[DFU] -> Starting receive firmware");
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state = States::Data;
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return 0;
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case Opcodes::ValidateFirmware: {
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if(state != States::Validate) {
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NRF_LOG_INFO("[DFU] -> Validate firmware image requested, but we are not in Data state");
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return 0;
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}
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NRF_LOG_INFO("[DFU] -> Validate firmware");
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state = States::Validated;
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uint8_t data[3]{static_cast<uint8_t>(Opcodes::Response),
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static_cast<uint8_t>(Opcodes::ValidateFirmware),
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static_cast<uint8_t>(ErrorCodes::NoError)};
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SendNotification(connectionHandle, data, 3);
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return 0;
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}
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case Opcodes::ActivateImageAndReset:
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if(state != States::Validated) {
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NRF_LOG_INFO("[DFU] -> Activate image and reset requested, but we are not in Validated state");
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return 0;
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}
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NRF_LOG_INFO("[DFU] -> Activate image and reset!");
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bleController.StopFirmwareUpdate();
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systemTask.PushMessage(Pinetime::System::SystemTask::Messages::BleFirmwareUpdateFinished);
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return 0;
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default: return 0;
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}
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}
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void DfuService::SendNotification(uint16_t connectionHandle, const uint8_t *data, const size_t size) {
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auto *om = ble_hs_mbuf_from_flat(data, size);
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auto ret = ble_gattc_notify_custom(connectionHandle, controlPointCharacteristicHandle, om);
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ASSERT(ret == 0);
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}
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uint16_t DfuService::ComputeCrc(uint8_t const * p_data, uint32_t size, uint16_t const * p_crc)
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{
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uint16_t crc = (p_crc == NULL) ? 0xFFFF : *p_crc;
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for (uint32_t i = 0; i < size; i++)
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{
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crc = (uint8_t)(crc >> 8) | (crc << 8);
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crc ^= p_data[i];
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crc ^= (uint8_t)(crc & 0xFF) >> 4;
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crc ^= (crc << 8) << 4;
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crc ^= ((crc & 0xFF) << 4) << 1;
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}
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return crc;
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}
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void DfuService::Validate() {
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uint32_t chunkSize = 200;
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int currentOffset = 0;
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uint16_t crc = 0;
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bool first = true;
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while(currentOffset < applicationSize) {
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uint32_t readSize = (applicationSize - currentOffset) > chunkSize ? chunkSize : (applicationSize - currentOffset);
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spiNorFlash.Read(writeOffset + currentOffset, tempBuffer, readSize);
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if(first) {
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crc = ComputeCrc(tempBuffer, readSize, NULL);
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first = false;
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}
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else
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crc = ComputeCrc(tempBuffer, readSize, &crc);
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currentOffset += readSize;
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}
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NRF_LOG_INFO("CRC : %u", crc);
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}
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void DfuService::WriteMagicNumber() {
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uint32_t magic[4] = {
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0xf395c277,
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0x7fefd260,
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0x0f505235,
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0x8079b62c,
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};
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uint32_t offset = writeOffset + (maxImageSize - (4 * sizeof(uint32_t)));
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spiNorFlash.Write(offset, reinterpret_cast<uint8_t *>(magic), 4 * sizeof(uint32_t));
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}
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